# U18AF on the 2019 Chevrolet Sonic

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name U18AF

- [10161953](https://open.wenmarpro.com/bulletins/10161953), 2019-07-01: This Technical bulletin provides a Correction for a Condition of OnStar Red LED Illuminated \- DTCs U18B4, U18B5, U18AF Set.